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2. Noise-cancelling headphones - Wikipedia

   en.wikipedia.org/wiki/Noise-cancelling_headphones

   Noise-cancelling headphones are headphones which suppress unwanted ambient sounds using active noise control. This is distinct from passive headphones which, if they reduce ambient sounds at all, use techniques such as soundproofing .

3. Best noise-canceling headphones, according to Consumer ... - AOL

   www.aol.com/best-noise-canceling-headphones...

   Consumer Reports doesn’t test battery life in headphones, but Sennheiser says this model will run for up to 20 hours with Bluetooth and noise canceling turned on. It can be used over Bluetooth ...

4. Our Favorite Editor-Recommended Noise-Cancelling Headphones ...

   www.aol.com/lifestyle/favorite-editor...

   Take up to $100 off the best-selling earbuds and over-ear noise-cancelling headphones from Sony, Beats, Bose, and Apple this Amazon Prime Day.

5. Active noise control - Wikipedia

   en.wikipedia.org/wiki/Active_noise_control

   Graphical depiction of active noise reduction. Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first.

6. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Some noise cancelling headphones are designed mainly to reduce low-frequency engine and travel noise in aircraft, trains, and automobiles, and are less effective in environments with other types of noise. Transducer technology. Headphones use various types of transducer to convert electrical signals to sound. Moving-coil

7. Best noise-canceling headphones, according to Consumer ... - AOL

   www.aol.com/news/best-noise-canceling-headphones...

   The Sennheiser PXC 550-II is one of the highest-scoring headphones in our ratings, with superb sound quality and noise canceling. The PXC 550-II is as much as $300 cheaper than many...